Frenzying Tom seems to lock out the PC from obtaining PPE pills. While potentially intentional and arguably thematic, I think it may potentially be an issue because Tom is one of the few NPCs whom players are indicated to try for first with the 'I should drop by' reminder at home.
Thank you for the feedback! I have added a way to continue getting PEP after Tom's frenzy to the coming update, as well as increasing the maximum amount that can be ordered at once.
I have also been working on a tutorial to better introduce the mechanics and gameplay, as well as additional quests/events with PEP rewards, although I'm currently unsure exactly how soon they will be ready.